Dean Hargrove (born July 27, 1938 in Iola, Kansas) is an American television producer, writer, and director. He specializes in creating mystery series. He frequently works with television producer Fred Silverman and television writer Joel Steiger.
Hargrove received an Emmy nomination in his early 20s as a writer for a short-lived NBC series with Bob Newhart, which was The Bob Newhart Show (not to be confused with the 1972 CBS series of that same name).
He became a writer for The Man From U.N.C.L.E. late in the show's first season (1964). His biggest involvement with UNCLE was in the second season where he wrote episodes such as the two-part "The Alexander the Greater Affair", which later became the film One Spy too Many. He did not work on the third season of UNCLE and wrote just one two-part episode of the short-lived fourth season.
After U.N.C.L.E., he worked at Universal Studios' television section, working on shows like It Takes a Thief, The Name of the Game and Columbo. He scripted the second Columbo pilot, "Ransom for a Dead Man", and was producer for the second, third and fourth seasons. More recently, he has worked for Viacom Productions and Paramount Domestic Television and produced shows which are Matlock on NBC and ABC from 1986 until 1995, Jake and the Fatman on CBS from 1987 until 1992 and Diagnosis: Murder on CBS from 1993 until 2002.